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sgitopnm - convert a SGI image file to a portable anymap
sgitopnm
[-verbose] [-channel c] [SGIfile]
Reads an SGI image file as input.
Produces a PGM image for a 2-dimensional (1 channel) input file, and a PPM
image for a 3-dimensional (3 or more channels) input file.
Alternatively,
produces a PGM image of any one of the channels in the input file.
- -verbose
- Give some information about the SGI image file.
- -channel c
- Extract channel
c of the image as a PGM image. Without this option, sgitopnm extracts
the first 3 channels as a PPM image or, if the input has only 1 channel,
extracts that as a PGM image, and if the input has 2 channels, fails.
SGI
Image File Format documentation (draft v0.95) by Paul Haeberli (paul@sgi.com).
Available via ftp at sgi.com:graphics/SGIIMAGESPEC.
pnm(5)
, pnmtosgi(1)
Copyright (C) 1994 by Ingo Wilken (Ingo.Wilken@informatik.uni-oldenburg.de)
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